Non-toxic primer mix

• US 6,478,903 B1
• Filed: 10/06/2000
• Issued: 11/12/2002
• Est. Priority Date: 10/06/2000
• Status: Expired due to Term

• Current Assignee: Ammunition Operations, LLC (Vista Outdoor Inc.)
• Original Assignee: RA Brands LLC (RA Factors, Inc.)
• Inventors: Webb, Tim, John, Henry J. Jr., Yeager, Carolyn, Pile, Don
• Primary Examiner(s): Miller, Edward A.
• Application Number:
  US09/680,803
• Time in Patent Office: 767 Days
• Field of Search: 149/18, 149/37, 149/38, 149/43, 149/44, 149/61, 149/62, 149/63
• US Class Current: 149/18
• CPC Class Codes: C06C 7/00 Non-electric detonators; Blasting caps; Primers

Abstract

A non-toxic primer mix including both bismuth sulfide and potassium nitrate as the pyrotechnic portion of the primer is disclosed. In a further embodiment, a non-toxic primer mix comprising zinc sulfide and aluminum nitrate as the pyrotechnic portion of the primer mix is disposed. Bismuth and zinc sulfide act as fuels for the oxidizers of potassium and aluminum nitrate in providing an ignition flame for the primer. The non-toxic primer mix further contains a lead-free explosive material, and additionally can include added fuels, sensitizers, explosives and binders.

Claims

1. A non-toxic primer mix comprising:

approximately 2-20% by weight bismuth sulfide;

approximately 25-70% by weight potassium nitrate; and

approximately 25-50% by weight of a lead-free explosive material.

2. The non-toxic primer mix of claim 1, wherein the explosive material is selected from the group consisting of primary and secondary explosives.

3. The non-toxic primer mix of claim 1, wherein the explosive material comprises diazodinitrophenol and tetrazene.

4. The non-toxic primer mix of claim 3, wherein the explosive material comprises between about 25-33% by weight diazodinitrophenol and about 4-10% by weight tetrazene.

5. The non-toxic primer mix of claim 1, further including approximately 2-20% by weight of a fuel.

6. The non-toxic primer mix of claim 5, wherein the fuel is selected from the group consisting of metallic and nonmetallic fuels.

7. The non-toxic primer mix of claim 6, wherein the metallic fuel is selected from the group consisting essentially of aluminum, manganese and titanium.

8. The non-toxic primer mix of claim 6, wherein the nonmetallic fuel comprises nitrocellulose.

9. The non-toxic primer mix of claim 1, further comprising a binder.

10. The non-toxic primer mix of claim 9, wherein the binder comprises a gum material.

11. The non-toxic primes mix of claim 1, further including pentaerythritol tetranitrate (PETN).